From: Stephen Warren <swarren@xxxxxxxxxx>
Add tegra30_ahub_{suspend,resume}. These use regcache functions to
restore all HW registers after power loss during a suspend/resume cycle.
Signed-off-by: Stephen Warren <swarren@xxxxxxxxxx>
---
sound/soc/tegra/tegra30_ahub.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/sound/soc/tegra/tegra30_ahub.c b/sound/soc/tegra/tegra30_ahub.c
index 23e592f..0f4787c 100644
--- a/sound/soc/tegra/tegra30_ahub.c
+++ b/sound/soc/tegra/tegra30_ahub.c
@@ -627,9 +627,30 @@ static int tegra30_ahub_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_PM_SLEEP
+static int tegra30_ahub_suspend(struct device *dev)
+{
+ regcache_mark_dirty(ahub->regmap_ahub);
+ regcache_mark_dirty(ahub->regmap_apbif);
+
+ return 0;
+}
+
+static int tegra30_ahub_resume(struct device *dev)
+{
+ int ret;
+
+ ret = regcache_sync(ahub->regmap_ahub);
+ ret |= regcache_sync(ahub->regmap_apbif);
+
+ return ret;
+}
+#endif
+
static const struct dev_pm_ops tegra30_ahub_pm_ops = {
SET_RUNTIME_PM_OPS(tegra30_ahub_runtime_suspend,
tegra30_ahub_runtime_resume, NULL)
+ SET_SYSTEM_SLEEP_PM_OPS(tegra30_ahub_suspend, tegra30_ahub_resume)
};
static struct platform_driver tegra30_ahub_driver = {
--
1.7.10.4
--
To unsubscribe from this list: send the line "unsubscribe linux-tegra" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
